﻿/*
 *   _____                                ______
 *  /_   /  ____  ____  ____  _________  / __/ /_
 *    / /  / __ \/ __ \/ __ \/ ___/ __ \/ /_/ __/
 *   / /__/ /_/ / / / / /_/ /\_ \/ /_/ / __/ /_
 *  /____/\____/_/ /_/\__  /____/\____/_/  \__/
 *                   /____/
 *
 * Authors:
 *   钟峰(Popeye Zhong) <zongsoft@qq.com>
 *
 * Copyright (C) 2020-2025 Zongsoft Studio <http://www.zongsoft.com>
 *
 * This file is part of Zongsoft.Web.OpenApi library.
 *
 * The Zongsoft.Web.OpenApi is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3.0 of the License,
 * or (at your option) any later version.
 *
 * The Zongsoft.Web.OpenApi is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the Zongsoft.Web.OpenApi library. If not, see <http://www.gnu.org/licenses/>.
 */

using System;
using System.Collections.Generic;

using Microsoft.OpenApi;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.AspNetCore.Mvc.ApplicationModels;

using Zongsoft.Web.Routing;

namespace Zongsoft.Web.OpenApi;

internal static class Utility
{
	public static bool IsBody(this ParameterModel parameter)
	{
		var source = parameter.GetParameterSource();
		return source == BindingSource.Body || source == BindingSource.Form || source == BindingSource.FormFile;
	}

	public static ParameterLocation? GetLocation(ParameterModel parameter)
	{
		var source = parameter.GetParameterSource();

		if(source == BindingSource.Path)
			return ParameterLocation.Path;
		if(source == BindingSource.Query)
			return ParameterLocation.Query;
		if(source == BindingSource.Header)
			return ParameterLocation.Header;

		return null;
	}

	public static bool IsDictionaryEntry(this Type type) =>
		type == typeof(System.Collections.DictionaryEntry) || (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(KeyValuePair<,>));

	public static bool IsScalarType(this Type type)
	{
		if(type == null)
			return false;

		type = Nullable.GetUnderlyingType(type) ?? type;

		var result = type.IsPrimitive ||
			   type == typeof(string) ||
			   type == typeof(decimal) ||
			   type == typeof(DateTime) ||
			   type == typeof(DateTimeOffset) ||
			   type == typeof(TimeSpan) ||
			   type == typeof(Guid);

		if(result)
			return true;

		var converter = Zongsoft.Common.Convert.GetTypeConverter(type);
		return converter != null && converter.CanConvertFrom(typeof(string));
	}
}
